#app {
  /* 中间内容 */
  .main-container {
    position: relative;
    min-height: 100%;
    margin-left: 210px;
  }
  /* 菜单栏 */
  .layout-container {
    position: relative;
    height: 100%;
    width: 100%;
    .sidebar-container {
      width: 210px;
      height: 100%;
      position: fixed;
      top: 0;
      left: 0;
      z-index: 999;
      overflow: hidden;
      background-color: #fff;
      box-shadow: 2px 0 6px 0 rgb(144 142 142 / 13%);
    }
  }
}